contrib/src/ogl/divided.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        divided.cpp
   3 // Purpose:     wxDividedShape class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     12/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16 #pragma hdrstop
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20 #include "wx/wx.h"
  21 #endif
  22
  23 #if wxUSE_PROLOGIO
  24 #include "wx/deprecated/wxexpr.h"
  25 #endif
  26
  27 #include "wx/ogl/ogl.h"
  28
  29
  30 class wxDividedShapeControlPoint: public wxControlPoint
  31 {
  32  DECLARE_DYNAMIC_CLASS(wxDividedShapeControlPoint)
  33  private:
  34   int regionId;
  35  public:
  36   wxDividedShapeControlPoint() { regionId = 0; }
  37   wxDividedShapeControlPoint(wxShapeCanvas *the_canvas, wxShape *object, int region,
  38                             double size, double the_xoffset, double the_yoffset, int the_type);
  39   ~wxDividedShapeControlPoint();
  40
  41   void OnDragLeft(bool draw, double x, double y, int keys=0, int attachment = 0);
  42   void OnBeginDragLeft(double x, double y, int keys=0, int attachment = 0);
  43   void OnEndDragLeft(double x, double y, int keys=0, int attachment = 0);
  44 };
  45
  46 IMPLEMENT_DYNAMIC_CLASS(wxDividedShapeControlPoint, wxControlPoint)
  47
  48 /*
  49  * Divided object
  50  *
  51  */
  52
  53 IMPLEMENT_DYNAMIC_CLASS(wxDividedShape, wxRectangleShape)
  54
  55 wxDividedShape::wxDividedShape(double w, double h): wxRectangleShape(w, h)
  56 {
  57   ClearRegions();
  58 }
  59
  60 wxDividedShape::~wxDividedShape()
  61 {
  62 }
  63
  64 void wxDividedShape::OnDraw(wxDC& dc)
  65 {
  66   wxRectangleShape::OnDraw(dc);
  67 }
  68
  69 void wxDividedShape::OnDrawContents(wxDC& dc)
  70 {
  71   double defaultProportion = (double)(GetRegions().GetCount() > 0 ? (1.0/((double)(GetRegions().GetCount()))) : 0.0);
  72   double currentY = (double)(m_ypos - (m_height / 2.0));
  73   double maxY = (double)(m_ypos + (m_height / 2.0));
  74
  75   double leftX = (double)(m_xpos - (m_width / 2.0));
  76   double rightX = (double)(m_xpos + (m_width / 2.0));
  77
  78   if (m_pen) dc.SetPen(* m_pen);
  79
  80   dc.SetTextForeground(m_textColour);
  81
  82 #ifdef __WXMSW__
  83   // For efficiency, don't do this under X - doesn't make
  84   // any visible difference for our purposes.
  85   if (m_brush)
  86     dc.SetTextBackground(m_brush->GetColour());
  87 #endif
  88 /*
  89   if (!formatted)
  90   {
  91     FormatRegionText();
  92     formatted = true;
  93   }
  94 */
  95   if (GetDisableLabel()) return;
  96
  97   double xMargin = 2;
  98   double yMargin = 2;
  99   dc.SetBackgroundMode(wxTRANSPARENT);
 100
 101   wxObjectList::compatibility_iterator node = GetRegions().GetFirst();
 102   while (node)
 103   {
 104     wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 105     dc.SetFont(* region->GetFont());
 106     dc.SetTextForeground(region->GetActualColourObject());
 107
 108     double proportion =
 109       region->m_regionProportionY < 0.0 ? defaultProportion : region->m_regionProportionY;
 110
 111     double y = currentY + m_height*proportion;
 112     double actualY = maxY < y ? maxY : y;
 113
 114     double centreX = m_xpos;
 115     double centreY = (double)(currentY + (actualY - currentY)/2.0);
 116
 117     oglDrawFormattedText(dc, &region->m_formattedText,
 118              (double)(centreX), (double)(centreY), (double)(m_width-2*xMargin), (double)(actualY - currentY - 2*yMargin),
 119              region->m_formatMode);
 120     if ((y <= maxY) && (node->GetNext()))
 121     {
 122       wxPen *regionPen = region->GetActualPen();
 123       if (regionPen)
 124       {
 125         dc.SetPen(* regionPen);
 126         dc.DrawLine(WXROUND(leftX), WXROUND(y), WXROUND(rightX), WXROUND(y));
 127       }
 128     }
 129
 130     currentY = actualY;
 131
 132     node = node->GetNext();
 133   }
 134 }
 135
 136 void wxDividedShape::SetSize(double w, double h, bool WXUNUSED(recursive))
 137 {
 138   SetAttachmentSize(w, h);
 139   m_width = w;
 140   m_height = h;
 141   SetRegionSizes();
 142 }
 143
 144 void wxDividedShape::SetRegionSizes()
 145 {
 146   if (GetRegions().GetCount() == 0)
 147     return;
 148
 149   double defaultProportion = (double)(GetRegions().GetCount() > 0 ? (1.0/((double)(GetRegions().GetCount()))) : 0.0);
 150   double currentY = (double)(m_ypos - (m_height / 2.0));
 151   double maxY = (double)(m_ypos + (m_height / 2.0));
 152
 153 //  double leftX = (double)(m_xpos - (m_width / 2.0));
 154 //  double rightX = (double)(m_xpos + (m_width / 2.0));
 155
 156   wxObjectList::compatibility_iterator node = GetRegions().GetFirst();
 157   while (node)
 158   {
 159     wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 160     double proportion =
 161       region->m_regionProportionY <= 0.0 ? defaultProportion : region->m_regionProportionY;
 162
 163     double sizeY = (double)proportion*m_height;
 164     double y = currentY + sizeY;
 165     double actualY = maxY < y ? maxY : y;
 166
 167     double centreY = (double)(currentY + (actualY - currentY)/2.0);
 168
 169     region->SetSize(m_width, sizeY);
 170     region->SetPosition(0.0, (double)(centreY - m_ypos));
 171     currentY = actualY;
 172     node = node->GetNext();
 173   }
 174 }
 175
 176 // Attachment points correspond to regions in the divided box
 177 bool wxDividedShape::GetAttachmentPosition(int attachment, double *x, double *y, int nth, int no_arcs,
 178   wxLineShape *line)
 179 {
 180   int totalNumberAttachments = (GetRegions().GetCount() * 2) + 2;
 181   if ((GetAttachmentMode() == ATTACHMENT_MODE_NONE) || (attachment >= totalNumberAttachments))
 182   {
 183     return wxShape::GetAttachmentPosition(attachment, x, y, nth, no_arcs);
 184   }
 185
 186   int n = GetRegions().GetCount();
 187   bool isEnd = (line && line->IsEnd(this));
 188
 189   double left = (double)(m_xpos - m_width/2.0);
 190   double right = (double)(m_xpos + m_width/2.0);
 191   double top = (double)(m_ypos - m_height/2.0);
 192   double bottom = (double)(m_ypos + m_height/2.0);
 193
 194   // Zero is top, n+1 is bottom.
 195   if (attachment == 0)
 196   {
 197     *y = top;
 198     if (m_spaceAttachments)
 199     {
 200       if (line && (line->GetAlignmentType(isEnd) == LINE_ALIGNMENT_TO_NEXT_HANDLE))
 201       {
 202         // Align line according to the next handle along
 203         wxRealPoint *point = line->GetNextControlPoint(this);
 204         if (point->x < left)
 205           *x = left;
 206         else if (point->x > right)
 207           *x = right;
 208         else
 209           *x = point->x;
 210       }
 211       else
 212         *x = left + (nth + 1)*m_width/(no_arcs + 1);
 213     }
 214     else
 215       *x = m_xpos;
 216   }
 217   else if (attachment == (n+1))
 218   {
 219     *y = bottom;
 220     if (m_spaceAttachments)
 221     {
 222       if (line && (line->GetAlignmentType(isEnd) == LINE_ALIGNMENT_TO_NEXT_HANDLE))
 223       {
 224         // Align line according to the next handle along
 225         wxRealPoint *point = line->GetNextControlPoint(this);
 226         if (point->x < left)
 227           *x = left;
 228         else if (point->x > right)
 229           *x = right;
 230         else
 231           *x = point->x;
 232       }
 233       else
 234         *x = left + (nth + 1)*m_width/(no_arcs + 1);
 235     }
 236     else
 237       *x = m_xpos;
 238   }
 239   // Left or right.
 240   else
 241   {
 242     bool isLeft = !(attachment < (n+1));
 243     int i = (isLeft) ? (totalNumberAttachments - attachment - 1) : (attachment-1);
 244     wxObjectList::compatibility_iterator node = GetRegions().Item(i);
 245     if (node)
 246     {
 247       wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 248
 249       if (isLeft)
 250         *x = left;
 251       else
 252         *x = right;
 253
 254       // Calculate top and bottom of region
 255       top = (double)((m_ypos + region->m_y) - (region->m_height/2.0));
 256       bottom = (double)((m_ypos + region->m_y) + (region->m_height/2.0));
 257
 258       // Assuming we can trust the absolute size and
 259       // position of these regions...
 260       if (m_spaceAttachments)
 261       {
 262         if (line && (line->GetAlignmentType(isEnd) == LINE_ALIGNMENT_TO_NEXT_HANDLE))
 263         {
 264           // Align line according to the next handle along
 265           wxRealPoint *point = line->GetNextControlPoint(this);
 266           if (point->y < bottom)
 267             *y = bottom;
 268           else if (point->y > top)
 269             *y = top;
 270           else
 271             *y = point->y;
 272         }
 273         else
 274 //          *y = (double)(((m_ypos + region->m_y) - (region->m_height/2.0)) + (nth + 1)*region->m_height/(no_arcs+1));
 275           *y = (double)(top + (nth + 1)*region->m_height/(no_arcs+1));
 276       }
 277       else
 278         *y = (double)(m_ypos + region->m_y);
 279     }
 280     else
 281     {
 282       *x = m_xpos;
 283       *y = m_ypos;
 284       return false;
 285     }
 286   }
 287   return true;
 288 }
 289
 290 int wxDividedShape::GetNumberOfAttachments() const
 291 {
 292   // There are two attachments for each region (left and right),
 293   // plus one on the top and one on the bottom.
 294   int n = (GetRegions().GetCount() * 2) + 2;
 295
 296   int maxN = n - 1;
 297   wxObjectList::compatibility_iterator node = m_attachmentPoints.GetFirst();
 298   while (node)
 299   {
 300     wxAttachmentPoint *point = (wxAttachmentPoint *)node->GetData();
 301     if (point->m_id > maxN)
 302       maxN = point->m_id;
 303     node = node->GetNext();
 304   }
 305   return maxN + 1;
 306 }
 307
 308 bool wxDividedShape::AttachmentIsValid(int attachment) const
 309 {
 310   int totalNumberAttachments = (GetRegions().GetCount() * 2) + 2;
 311   if (attachment >= totalNumberAttachments)
 312   {
 313     return wxShape::AttachmentIsValid(attachment);
 314   }
 315   else if (attachment >= 0)
 316     return true;
 317   else
 318     return false;
 319 }
 320
 321 void wxDividedShape::Copy(wxShape& copy)
 322 {
 323   wxRectangleShape::Copy(copy);
 324 }
 325
 326 // Region operations
 327
 328 void wxDividedShape::MakeControlPoints()
 329 {
 330   wxRectangleShape::MakeControlPoints();
 331
 332   MakeMandatoryControlPoints();
 333 }
 334
 335 void wxDividedShape::MakeMandatoryControlPoints()
 336 {
 337   double currentY = (double)(GetY() - (m_height / 2.0));
 338   double maxY = (double)(GetY() + (m_height / 2.0));
 339
 340   wxObjectList::compatibility_iterator node = GetRegions().GetFirst();
 341   int i = 0;
 342   while (node)
 343   {
 344     wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 345
 346     double proportion = region->m_regionProportionY;
 347
 348     double y = currentY + m_height*proportion;
 349     double actualY = (double)(maxY < y ? maxY : y);
 350
 351     if (node->GetNext())
 352     {
 353       wxDividedShapeControlPoint *controlPoint =
 354         new wxDividedShapeControlPoint(m_canvas, this, i, CONTROL_POINT_SIZE, 0.0, (double)(actualY - GetY()), 0);
 355       m_canvas->AddShape(controlPoint);
 356       m_controlPoints.Append(controlPoint);
 357     }
 358     currentY = actualY;
 359     i ++;
 360     node = node->GetNext();
 361   }
 362 }
 363
 364 void wxDividedShape::ResetControlPoints()
 365 {
 366   // May only have the region handles, (n - 1) of them.
 367   if (m_controlPoints.GetCount() > (GetRegions().GetCount() - 1))
 368     wxRectangleShape::ResetControlPoints();
 369
 370   ResetMandatoryControlPoints();
 371 }
 372
 373 void wxDividedShape::ResetMandatoryControlPoints()
 374 {
 375   double currentY = (double)(GetY() - (m_height / 2.0));
 376   double maxY = (double)(GetY() + (m_height / 2.0));
 377
 378   wxObjectList::compatibility_iterator node = m_controlPoints.GetFirst();
 379   int i = 0;
 380   while (node)
 381   {
 382     wxControlPoint *controlPoint = (wxControlPoint *)node->GetData();
 383     if (controlPoint->IsKindOf(CLASSINFO(wxDividedShapeControlPoint)))
 384     {
 385       wxObjectList::compatibility_iterator node1 = GetRegions().Item(i);
 386       wxShapeRegion *region = (wxShapeRegion *)node1->GetData();
 387
 388       double proportion = region->m_regionProportionY;
 389
 390       double y = currentY + m_height*proportion;
 391       double actualY = (double)(maxY < y ? maxY : y);
 392
 393       controlPoint->m_xoffset = 0.0;
 394       controlPoint->m_yoffset = (double)(actualY - GetY());
 395       currentY = actualY;
 396       i ++;
 397     }
 398     node = node->GetNext();
 399   }
 400 }
 401
 402 #if wxUSE_PROLOGIO
 403 void wxDividedShape::WriteAttributes(wxExpr *clause)
 404 {
 405   wxRectangleShape::WriteAttributes(clause);
 406 }
 407
 408 void wxDividedShape::ReadAttributes(wxExpr *clause)
 409 {
 410   wxRectangleShape::ReadAttributes(clause);
 411 }
 412 #endif
 413
 414 /*
 415  * Edit the division colour/style
 416  *
 417  */
 418
 419 void wxDividedShape::EditRegions()
 420 {
 421   wxMessageBox(wxT("EditRegions() is unimplemented."), wxT("OGL"), wxOK);
 422
 423   // TODO
 424 #if 0
 425   if (GetRegions().GetCount() < 2)
 426     return;
 427
 428   wxBeginBusyCursor();
 429
 430   GraphicsForm *form = new GraphicsForm("Divided nodes");
 431   // Need an array to store all the style strings,
 432   // since they need to be converted to integers
 433   char **styleStrings = new char *[GetRegions().GetCount()];
 434   for (int j = 0; j < GetRegions().GetCount(); j++)
 435     styleStrings[j] = NULL;
 436
 437   int i = 0;
 438   wxNode *node = GetRegions().GetFirst();
 439   while (node && node->GetNext())
 440   {
 441     wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 442     char buf[50];
 443     sprintf(buf, "Region %d", (i+1));
 444     form->Add(wxMakeFormMessage(buf));
 445     form->Add(wxMakeFormNewLine());
 446
 447     form->Add(wxMakeFormString("Colour", &region->penColour, wxFORM_CHOICE,
 448               new wxList(wxMakeConstraintStrings(
 449     "Invisible"        ,
 450     "BLACK"            ,
 451     "BLUE"             ,
 452     "BROWN"            ,
 453     "CORAL"            ,
 454     "CYAN"             ,
 455     "DARK GREY"        ,
 456     "DARK GREEN"       ,
 457     "DIM GREY"         ,
 458     "GREY"             ,
 459     "GREEN"            ,
 460     "LIGHT BLUE"       ,
 461     "LIGHT GREY"       ,
 462     "MAGENTA"          ,
 463     "MAROON"           ,
 464     "NAVY"             ,
 465     "ORANGE"           ,
 466     "PURPLE"           ,
 467     "RED"              ,
 468     "TURQUOISE"        ,
 469     "VIOLET"           ,
 470     "WHITE"            ,
 471     "YELLOW"           ,
 472     NULL),
 473     NULL), NULL, wxVERTICAL, 150));
 474
 475     char *styleString = NULL;
 476     switch (region->penStyle)
 477     {
 478       case wxSHORT_DASH:
 479         styleString = "Short Dash";
 480         break;
 481       case wxLONG_DASH:
 482         styleString = "Long Dash";
 483         break;
 484       case wxDOT:
 485         styleString = "Dot";
 486         break;
 487       case wxDOT_DASH:
 488         styleString = "Dot Dash";
 489         break;
 490       case wxSOLID:
 491       default:
 492         styleString = "Solid";
 493         break;
 494     }
 495     styleStrings[i] = copystring(styleString);
 496     form->Add(wxMakeFormString("Style", &(styleStrings[i]), wxFORM_CHOICE,
 497               new wxList(wxMakeConstraintStrings(
 498     "Solid"            ,
 499     "Short Dash"       ,
 500     "Long Dash"        ,
 501     "Dot"              ,
 502     "Dot Dash"         ,
 503     NULL),
 504     NULL), NULL, wxVERTICAL, 100));
 505     node = node->GetNext();
 506     i ++;
 507     if (node && node->GetNext())
 508       form->Add(wxMakeFormNewLine());
 509   }
 510   wxDialogBox *dialog = new wxDialogBox(m_canvas->GetParent(), "Divided object properties", 10, 10, 500, 500);
 511   if (GraphicsLabelFont)
 512     dialog->SetLabelFont(GraphicsLabelFont);
 513   if (GraphicsButtonFont)
 514     dialog->SetButtonFont(GraphicsButtonFont);
 515   form->AssociatePanel(dialog);
 516   form->dialog = dialog;
 517
 518   dialog->Fit();
 519   dialog->Centre(wxBOTH);
 520
 521   wxEndBusyCursor();
 522
 523   dialog->Show(true);
 524
 525   node = GetRegions().GetFirst();
 526   i = 0;
 527   while (node)
 528   {
 529     wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 530
 531     if (styleStrings[i])
 532     {
 533       if (strcmp(styleStrings[i], "Solid") == 0)
 534         region->penStyle = wxSOLID;
 535       else if (strcmp(styleStrings[i], "Dot") == 0)
 536         region->penStyle = wxDOT;
 537       else if (strcmp(styleStrings[i], "Short Dash") == 0)
 538         region->penStyle = wxSHORT_DASH;
 539       else if (strcmp(styleStrings[i], "Long Dash") == 0)
 540         region->penStyle = wxLONG_DASH;
 541       else if (strcmp(styleStrings[i], "Dot Dash") == 0)
 542         region->penStyle = wxDOT_DASH;
 543       delete[] styleStrings[i];
 544     }
 545     region->m_actualPenObject = NULL;
 546     node = node->GetNext();
 547     i ++;
 548   }
 549   delete[] styleStrings;
 550   Draw(dc);
 551 #endif
 552 }
 553
 554 void wxDividedShape::OnRightClick(double x, double y, int keys, int attachment)
 555 {
 556   if (keys & KEY_CTRL)
 557   {
 558     EditRegions();
 559   }
 560   else
 561   {
 562     wxRectangleShape::OnRightClick(x, y, keys, attachment);
 563   }
 564 }
 565
 566 wxDividedShapeControlPoint::wxDividedShapeControlPoint(wxShapeCanvas *the_canvas, wxShape *object,
 567   int region, double size, double the_m_xoffset, double the_m_yoffset, int the_type):
 568     wxControlPoint(the_canvas, object, size, the_m_xoffset, the_m_yoffset, the_type)
 569 {
 570   regionId = region;
 571 }
 572
 573 wxDividedShapeControlPoint::~wxDividedShapeControlPoint()
 574 {
 575 }
 576
 577 // Implement resizing of divided object division
 578 void wxDividedShapeControlPoint::OnDragLeft(bool WXUNUSED(draw), double WXUNUSED(x), double y, int WXUNUSED(keys), int WXUNUSED(attachment))
 579 {
 580     wxClientDC dc(GetCanvas());
 581     GetCanvas()->PrepareDC(dc);
 582
 583     dc.SetLogicalFunction(OGLRBLF);
 584     wxPen dottedPen(*wxBLACK, 1, wxDOT);
 585     dc.SetPen(dottedPen);
 586     dc.SetBrush((* wxTRANSPARENT_BRUSH));
 587
 588     wxDividedShape *dividedObject = (wxDividedShape *)m_shape;
 589     double x1 = (double)(dividedObject->GetX() - (dividedObject->GetWidth()/2.0));
 590     double y1 = y;
 591     double x2 = (double)(dividedObject->GetX() + (dividedObject->GetWidth()/2.0));
 592     double y2 = y;
 593     dc.DrawLine(WXROUND(x1), WXROUND(y1), WXROUND(x2), WXROUND(y2));
 594 }
 595
 596 void wxDividedShapeControlPoint::OnBeginDragLeft(double WXUNUSED(x), double y, int WXUNUSED(keys), int WXUNUSED(attachment))
 597 {
 598     wxClientDC dc(GetCanvas());
 599     GetCanvas()->PrepareDC(dc);
 600
 601     wxDividedShape *dividedObject = (wxDividedShape *)m_shape;
 602     dc.SetLogicalFunction(OGLRBLF);
 603     wxPen dottedPen(*wxBLACK, 1, wxDOT);
 604     dc.SetPen(dottedPen);
 605     dc.SetBrush((* wxTRANSPARENT_BRUSH));
 606
 607     double x1 = (double)(dividedObject->GetX() - (dividedObject->GetWidth()/2.0));
 608     double y1 = y;
 609     double x2 = (double)(dividedObject->GetX() + (dividedObject->GetWidth()/2.0));
 610     double y2 = y;
 611     dc.DrawLine(WXROUND(x1), WXROUND(y1), WXROUND(x2), WXROUND(y2));
 612     m_canvas->CaptureMouse();
 613 }
 614
 615 void wxDividedShapeControlPoint::OnEndDragLeft(double WXUNUSED(x), double y, int WXUNUSED(keys), int WXUNUSED(attachment))
 616 {
 617     wxClientDC dc(GetCanvas());
 618     GetCanvas()->PrepareDC(dc);
 619
 620     wxDividedShape *dividedObject = (wxDividedShape *)m_shape;
 621     wxObjectList::compatibility_iterator node = dividedObject->GetRegions().Item(regionId);
 622     if (!node)
 623     return;
 624
 625     wxShapeRegion *thisRegion = (wxShapeRegion *)node->GetData();
 626     wxShapeRegion *nextRegion = NULL; // Region below this one
 627
 628     dc.SetLogicalFunction(wxCOPY);
 629
 630     m_canvas->ReleaseMouse();
 631
 632     // Find the old top and bottom of this region,
 633     // and calculate the new proportion for this region
 634     // if legal.
 635
 636     double currentY = (double)(dividedObject->GetY() - (dividedObject->GetHeight() / 2.0));
 637     double maxY = (double)(dividedObject->GetY() + (dividedObject->GetHeight() / 2.0));
 638
 639     // Save values
 640     double thisRegionTop = 0.0;
 641     double nextRegionBottom = 0.0;
 642
 643     node = dividedObject->GetRegions().GetFirst();
 644     while (node)
 645     {
 646       wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 647
 648       double proportion = region->m_regionProportionY;
 649       double yy = currentY + (dividedObject->GetHeight()*proportion);
 650       double actualY = (double)(maxY < yy ? maxY : yy);
 651
 652       if (region == thisRegion)
 653       {
 654         thisRegionTop = currentY;
 655         if (node->GetNext())
 656           nextRegion = (wxShapeRegion *)node->GetNext()->GetData();
 657       }
 658       if (region == nextRegion)
 659       {
 660         nextRegionBottom = actualY;
 661       }
 662
 663       currentY = actualY;
 664       node = node->GetNext();
 665     }
 666     if (!nextRegion)
 667       return;
 668
 669     // Check that we haven't gone above this region or below
 670     // next region.
 671     if ((y <= thisRegionTop) || (y >= nextRegionBottom))
 672     return;
 673
 674     dividedObject->EraseLinks(dc);
 675
 676     // Now calculate the new proportions of this region and the next region.
 677     double thisProportion = (double)((y - thisRegionTop)/dividedObject->GetHeight());
 678     double nextProportion = (double)((nextRegionBottom - y)/dividedObject->GetHeight());
 679     thisRegion->SetProportions(0.0, thisProportion);
 680     nextRegion->SetProportions(0.0, nextProportion);
 681     m_yoffset = (double)(y - dividedObject->GetY());
 682
 683     // Now reformat text
 684     int i = 0;
 685     node = dividedObject->GetRegions().GetFirst();
 686     while (node)
 687     {
 688         wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 689         if (region->GetText())
 690         {
 691         wxString s(region->GetText());
 692         dividedObject->FormatText(dc, s.c_str(), i);
 693         }
 694         node = node->GetNext();
 695         i++;
 696     }
 697     dividedObject->SetRegionSizes();
 698     dividedObject->Draw(dc);
 699     dividedObject->GetEventHandler()->OnMoveLinks(dc);
 700 }
 701